Opie::MM::ExifData

Opie::MM::ExifData Class Reference

Class for reading exif data from images. More...

#include </home/clem/local/src/opie/libopie2/opiemm/opieexif.h>

Collaboration diagram for Opie::MM::ExifData:

[legend]List of all members.


Public Types
enum	ReadMode_t { READ_EXIF = 1, READ_IMAGE = 2, READ_ALL = 3 }
Public Member Functions
	ExifData ()
	Contructor for initialising.
virtual	~ExifData ()
	destructor
bool	scan (const QString &aFile)
	scan a given file
QString	getCameraMake ()
QString	getCameraModel ()
QString	getDateTime ()
int	getOrientation ()
int	getHeight ()
int	getWidth ()
int	getIsColor ()
int	getProcess ()
int	getFlashUsed ()
float	getFocalLength ()
float	getExposureTime ()
float	getApertureFNumber ()
float	getDistance ()
int	getWhitebalance ()
int	getMeteringMode ()
float	getCCDWidth ()
float	getExposureBias ()
int	getExposureProgram ()
int	getISOequivalent ()
int	getCompressionLevel ()
QString	getUserComment ()
QString	getComment ()
QImage	getThumbnail ()
bool	isThumbnailSane ()
bool	isNullThumbnail ()
Static Public Member Functions
static QString	color_mode_to_string (bool b)
static QString	compression_to_string (int level)
static QString	white_balance_string (int i)
static QString	metering_mode (int i)
static QString	exposure_program (int i)
Private Member Functions
int	ReadJpegSections (QFile &infile, ReadMode_t ReadMode)
void	DiscardData (void)
int	Get16u (void *Short)
int	Get32s (void *Long)
unsigned	Get32u (void *Long)
double	ConvertAnyFormat (void *ValuePtr, int Format)
void	ProcessExifDir (unsigned char DirStart, unsigned char OffsetBase, unsigned ExifLength)
void	process_COM (const uchar *Data, int length)
void	process_SOFn (const uchar *Data, int marker)
int	Get16m (const void *Short)
void	process_EXIF (unsigned char *CharBuf, unsigned int length)
int	Exif2tm (struct::tm timeptr, char ExifTime)
Private Attributes
Section_t	Sections [MAX_SECTIONS]
QString	CameraMake
QString	CameraModel
QString	DateTime
int	Orientation
int	Height
int	Width
int	ExifImageLength
int	ExifImageWidth
int	IsColor
int	Process
int	FlashUsed
float	FocalLength
float	ExposureTime
float	ApertureFNumber
float	Distance
int	Whitebalance
int	MeteringMode
float	CCDWidth
float	ExposureBias
int	ExposureProgram
int	ISOequivalent
int	CompressionLevel
QString	UserComment
QString	Comment
QImage	Thumbnail
unsigned char *	LastExifRefd
int	ExifSettingsLength
double	FocalplaneXRes
double	FocalplaneUnits
int	MotorolaOrder
int	SectionsRead
Static Private Attributes
static const int	MAX_SECTIONS = 20
static const unsigned int	PSEUDO_IMAGE_MARKER = 0x123
Classes
struct	Section_t
struct	TagTable_t

Detailed Description

Class for reading exif data from images.

This class is mostly used inside OImageScrollView for testing jpegs headers for a faster loading and scaling. It is taken from libexif and converted into an C++ structure.

See also:: OImageScrollView

Since:: 1.2

Definition at line 28 of file opieexif.h.

Member Enumeration Documentation

enum Opie::MM::ExifData::ReadMode_t

Enumeration values:

READ_EXIF

READ_IMAGE

READ_ALL

Definition at line 30 of file opieexif.h.

Constructor & Destructor Documentation

Opie::MM::ExifData::ExifData ( )

Contructor for initialising.

Definition at line 778 of file opieexif.cpp.
References ApertureFNumber, CCDWidth, CompressionLevel, Distance, ExposureBias, ExposureProgram, ExposureTime, FlashUsed, FocalLength, Height, IsColor, ISOequivalent, MeteringMode, MotorolaOrder, Orientation, Whitebalance, and Width.

Opie::MM::ExifData::~ExifData ( ) [virtual]

destructor

Definition at line 800 of file opieexif.cpp.

Member Function Documentation

QString Opie::MM::ExifData::color_mode_to_string ( bool b ) [static]

Definition at line 1011 of file opieexif.cpp.
References tr.
Referenced by JpegSlave::fullImageInfo(), and JpegSlave::iconViewName().

QString Opie::MM::ExifData::compression_to_string ( int level ) [static]

Definition at line 1015 of file opieexif.cpp.
References str, and tr.
Referenced by JpegSlave::fullImageInfo(), and JpegSlave::iconViewName().

double Opie::MM::ExifData::ConvertAnyFormat ( void * ValuePtr,

int Format

) [private]

Definition at line 327 of file opieexif.cpp.
References FMT_BYTE, FMT_DOUBLE, FMT_SBYTE, FMT_SINGLE, FMT_SLONG, FMT_SRATIONAL, FMT_SSHORT, FMT_ULONG, FMT_URATIONAL, FMT_USHORT, Get16u(), Get32s(), and Get32u().
Referenced by ProcessExifDir().

void Opie::MM::ExifData::DiscardData ( void ) [private]

Definition at line 283 of file opieexif.cpp.
References Sections, and SectionsRead.
Referenced by scan().

int Opie::MM::ExifData::Exif2tm ( struct::tm * timeptr,

char * ExifTime

) [private]

Definition at line 754 of file opieexif.cpp.

QString Opie::MM::ExifData::exposure_program ( int i ) [static]

Definition at line 1113 of file opieexif.cpp.
References tr.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::Get16m ( const void * Short ) [private]

Definition at line 693 of file opieexif.cpp.
Referenced by process_SOFn().

int Opie::MM::ExifData::Get16u ( void * Short ) [private]

Definition at line 293 of file opieexif.cpp.
References MotorolaOrder.
Referenced by ConvertAnyFormat(), process_EXIF(), and ProcessExifDir().

int Opie::MM::ExifData::Get32s ( void * Long ) [private]

Definition at line 305 of file opieexif.cpp.
References MotorolaOrder.
Referenced by ConvertAnyFormat(), and Get32u().

unsigned Opie::MM::ExifData::Get32u ( void * Long ) [private]

Definition at line 319 of file opieexif.cpp.
References Get32s().
Referenced by ConvertAnyFormat(), process_EXIF(), and ProcessExifDir().

float Opie::MM::ExifData::getApertureFNumber ( ) [inline]

Definition at line 121 of file opieexif.h.
References ApertureFNumber.
Referenced by JpegSlave::fullImageInfo().

QString Opie::MM::ExifData::getCameraMake ( ) [inline]

Definition at line 110 of file opieexif.h.
References CameraMake.
Referenced by JpegSlave::fullImageInfo().

QString Opie::MM::ExifData::getCameraModel ( ) [inline]

Definition at line 111 of file opieexif.h.
References CameraModel.
Referenced by JpegSlave::fullImageInfo().

float Opie::MM::ExifData::getCCDWidth ( ) [inline]

Definition at line 125 of file opieexif.h.
References CCDWidth.
Referenced by JpegSlave::fullImageInfo().

QString Opie::MM::ExifData::getComment ( ) [inline]

Definition at line 131 of file opieexif.h.
References Comment.
Referenced by JpegSlave::fullImageInfo(), and JpegSlave::iconViewName().

int Opie::MM::ExifData::getCompressionLevel ( ) [inline]

Definition at line 129 of file opieexif.h.
References CompressionLevel.
Referenced by JpegSlave::fullImageInfo(), and JpegSlave::iconViewName().

QString Opie::MM::ExifData::getDateTime ( ) [inline]

Definition at line 112 of file opieexif.h.
References DateTime.
Referenced by JpegSlave::fullImageInfo(), and JpegSlave::iconViewName().

float Opie::MM::ExifData::getDistance ( ) [inline]

Definition at line 122 of file opieexif.h.
References Distance.
Referenced by JpegSlave::fullImageInfo().

float Opie::MM::ExifData::getExposureBias ( ) [inline]

Definition at line 126 of file opieexif.h.
References ExposureBias.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::getExposureProgram ( ) [inline]

Definition at line 127 of file opieexif.h.
References ExposureProgram.
Referenced by JpegSlave::fullImageInfo().

float Opie::MM::ExifData::getExposureTime ( ) [inline]

Definition at line 120 of file opieexif.h.
References ExposureTime.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::getFlashUsed ( ) [inline]

Definition at line 118 of file opieexif.h.
References FlashUsed.
Referenced by JpegSlave::fullImageInfo().

float Opie::MM::ExifData::getFocalLength ( ) [inline]

Definition at line 119 of file opieexif.h.
References FocalLength.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::getHeight ( ) [inline]

Definition at line 114 of file opieexif.h.
References Height.
Referenced by JpegSlave::fullImageInfo(), JpegSlave::iconViewName(), Opie::MM::OImageScrollView::loadJpeg(), and JpegSlave::pixmap().

int Opie::MM::ExifData::getIsColor ( ) [inline]

Definition at line 116 of file opieexif.h.
References IsColor.
Referenced by JpegSlave::fullImageInfo(), and JpegSlave::iconViewName().

int Opie::MM::ExifData::getISOequivalent ( ) [inline]

Definition at line 128 of file opieexif.h.
References ISOequivalent.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::getMeteringMode ( ) [inline]

Definition at line 124 of file opieexif.h.
References MeteringMode.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::getOrientation ( ) [inline]

Definition at line 113 of file opieexif.h.
References Orientation.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::getProcess ( ) [inline]

Definition at line 117 of file opieexif.h.

QImage Opie::MM::ExifData::getThumbnail ( )

Definition at line 865 of file opieexif.cpp.
References Opie::MM::dest, Opie::MM::flip_image(), isThumbnailSane(), NULL, Orientation, Opie::MM::rotate_180(), Opie::MM::rotate_270(), Opie::MM::rotate_90(), and Thumbnail.
Referenced by JpegSlave::pixmap().

QString Opie::MM::ExifData::getUserComment ( ) [inline]

Definition at line 130 of file opieexif.h.
References UserComment.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::getWhitebalance ( ) [inline]

Definition at line 123 of file opieexif.h.
References Whitebalance.
Referenced by JpegSlave::fullImageInfo().

int Opie::MM::ExifData::getWidth ( ) [inline]

Definition at line 115 of file opieexif.h.
References Width.
Referenced by JpegSlave::fullImageInfo(), JpegSlave::iconViewName(), Opie::MM::OImageScrollView::loadJpeg(), and JpegSlave::pixmap().

bool Opie::MM::ExifData::isNullThumbnail ( ) [inline]

Definition at line 134 of file opieexif.h.
References isThumbnailSane().
Referenced by JpegSlave::pixmap().

bool Opie::MM::ExifData::isThumbnailSane ( )

Definition at line 841 of file opieexif.cpp.
References d, ExifImageLength, ExifImageWidth, Height, JPEG_TOL, Thumbnail, and Width.
Referenced by getThumbnail(), and isNullThumbnail().

QString Opie::MM::ExifData::metering_mode ( int i ) [static]

Definition at line 1078 of file opieexif.cpp.
References tr.
Referenced by JpegSlave::fullImageInfo().

void Opie::MM::ExifData::process_COM ( const uchar * Data,

int length

) [private]

Definition at line 655 of file opieexif.cpp.
References QString::append(), and Comment.
Referenced by ReadJpegSections().

void Opie::MM::ExifData::process_EXIF ( unsigned char * CharBuf,

unsigned int length

) [private]

Definition at line 703 of file opieexif.cpp.
References CCDWidth, ExifImageLength, ExifImageWidth, ExifSettingsLength, FlashUsed, FocalplaneUnits, FocalplaneXRes, Get16u(), Get32u(), LastExifRefd, MotorolaOrder, and ProcessExifDir().
Referenced by ReadJpegSections().

void Opie::MM::ExifData::process_SOFn ( const uchar * Data,

int marker

) [private]

Definition at line 671 of file opieexif.cpp.
References Get16m(), Height, IsColor, Process, and Width.
Referenced by ReadJpegSections().

void Opie::MM::ExifData::ProcessExifDir ( unsigned char * DirStart,

unsigned char * OffsetBase,

unsigned ExifLength

) [private]

Definition at line 367 of file opieexif.cpp.
References ApertureFNumber, BytesPerFormat, CameraMake, CameraModel, CompressionLevel, ConvertAnyFormat(), DateTime, DIR_ENTRY_ADDR, Distance, ExifImageLength, ExifImageWidth, ExposureBias, ExposureProgram, ExposureTime, FlashUsed, FocalLength, FocalplaneUnits, FocalplaneXRes, Get16u(), Get32u(), ISOequivalent, LastExifRefd, MeteringMode, NUM_FORMATS, oendl, Orientation, owarn, QString::sprintf(), TAG_APERTURE, TAG_COMPRESSION_LEVEL, TAG_DATETIME_ORIGINAL, TAG_EXIF_IMAGELENGTH, TAG_EXIF_IMAGEWIDTH, TAG_EXIF_OFFSET, TAG_EXPOSURE_BIAS, TAG_EXPOSURE_PROGRAM, TAG_EXPOSURETIME, TAG_FLASH, TAG_FNUMBER, TAG_FOCALLENGTH, TAG_FOCALPLANEUNITS, TAG_FOCALPLANEXRES, TAG_INTEROP_OFFSET, TAG_ISO_EQUIVALENT, TAG_MAKE, TAG_MAXAPERTURE, TAG_METERING_MODE, TAG_MODEL, TAG_ORIENTATION, TAG_SHUTTERSPEED, TAG_SUBJECT_DISTANCE, TAG_THUMBNAIL_LENGTH, TAG_THUMBNAIL_OFFSET, TAG_USERCOMMENT, TAG_WHITEBALANCE, Thumbnail, UserComment, and Whitebalance.
Referenced by process_EXIF().

int Opie::MM::ExifData::ReadJpegSections ( QFile & infile,

ReadMode_t ReadMode

) [private]

Definition at line 140 of file opieexif.cpp.
References QFile::at(), Opie::MM::ExifData::Section_t::Data, QFile::getch(), M_COM, M_EOI, M_EXIF, M_JFIF, M_SOF0, M_SOF1, M_SOF10, M_SOF11, M_SOF13, M_SOF14, M_SOF15, M_SOF2, M_SOF3, M_SOF5, M_SOF6, M_SOF7, M_SOF9, M_SOI, M_SOS, marker, MAX_SECTIONS, NULL, oendl, owarn, process_COM(), process_EXIF(), process_SOFn(), PSEUDO_IMAGE_MARKER, READ_EXIF, READ_IMAGE, QFile::readBlock(), Sections, SectionsRead, QFile::size(), size, Opie::MM::ExifData::Section_t::Size, and Opie::MM::ExifData::Section_t::Type.
Referenced by scan().

bool Opie::MM::ExifData::scan ( const QString & aFile )

scan a given file
try to scan the EXIF data of a image file
Parameters:

aFile the file to scan

Returns:
true if success, otherwise false

Definition at line 807 of file opieexif.cpp.
References CameraMake, CameraModel, Comment, DiscardData(), f, IO_ReadOnly, oendl, QFile::open(), owarn, READ_EXIF, ReadJpegSections(), QString::stripWhiteSpace(), and UserComment.
Referenced by JpegSlave::fullImageInfo(), JpegSlave::iconViewName(), Opie::MM::OImageScrollView::loadJpeg(), and JpegSlave::pixmap().

QString Opie::MM::ExifData::white_balance_string ( int i ) [static]

Definition at line 1034 of file opieexif.cpp.
References tr.
Referenced by JpegSlave::fullImageInfo().

Member Data Documentation

float Opie::MM::ExifData::ApertureFNumber [private]

Definition at line 65 of file opieexif.h.
Referenced by ExifData(), getApertureFNumber(), and ProcessExifDir().

QString Opie::MM::ExifData::CameraMake [private]

Definition at line 54 of file opieexif.h.
Referenced by getCameraMake(), ProcessExifDir(), and scan().

QString Opie::MM::ExifData::CameraModel [private]

Definition at line 55 of file opieexif.h.
Referenced by getCameraModel(), ProcessExifDir(), and scan().

float Opie::MM::ExifData::CCDWidth [private]

Definition at line 69 of file opieexif.h.
Referenced by ExifData(), getCCDWidth(), and process_EXIF().

QString Opie::MM::ExifData::Comment [private]

Definition at line 75 of file opieexif.h.
Referenced by getComment(), process_COM(), and scan().

int Opie::MM::ExifData::CompressionLevel [private]

Definition at line 73 of file opieexif.h.
Referenced by ExifData(), getCompressionLevel(), and ProcessExifDir().

QString Opie::MM::ExifData::DateTime [private]

Definition at line 56 of file opieexif.h.
Referenced by getDateTime(), and ProcessExifDir().

float Opie::MM::ExifData::Distance [private]

Definition at line 66 of file opieexif.h.
Referenced by ExifData(), getDistance(), and ProcessExifDir().

int Opie::MM::ExifData::ExifImageLength [private]

Definition at line 59 of file opieexif.h.
Referenced by isThumbnailSane(), process_EXIF(), and ProcessExifDir().

int Opie::MM::ExifData::ExifImageWidth [private]

Definition at line 59 of file opieexif.h.
Referenced by isThumbnailSane(), process_EXIF(), and ProcessExifDir().

int Opie::MM::ExifData::ExifSettingsLength [private]

Definition at line 79 of file opieexif.h.
Referenced by process_EXIF().

float Opie::MM::ExifData::ExposureBias [private]

Definition at line 70 of file opieexif.h.
Referenced by ExifData(), getExposureBias(), and ProcessExifDir().

int Opie::MM::ExifData::ExposureProgram [private]

Definition at line 71 of file opieexif.h.
Referenced by ExifData(), getExposureProgram(), and ProcessExifDir().

float Opie::MM::ExifData::ExposureTime [private]

Definition at line 64 of file opieexif.h.
Referenced by ExifData(), getExposureTime(), and ProcessExifDir().

int Opie::MM::ExifData::FlashUsed [private]

Definition at line 62 of file opieexif.h.
Referenced by ExifData(), getFlashUsed(), process_EXIF(), and ProcessExifDir().

float Opie::MM::ExifData::FocalLength [private]

Definition at line 63 of file opieexif.h.
Referenced by ExifData(), getFocalLength(), and ProcessExifDir().

double Opie::MM::ExifData::FocalplaneUnits [private]

Definition at line 81 of file opieexif.h.
Referenced by process_EXIF(), and ProcessExifDir().

double Opie::MM::ExifData::FocalplaneXRes [private]

Definition at line 80 of file opieexif.h.
Referenced by process_EXIF(), and ProcessExifDir().

int Opie::MM::ExifData::Height [private]

Definition at line 58 of file opieexif.h.
Referenced by ExifData(), getHeight(), isThumbnailSane(), and process_SOFn().

int Opie::MM::ExifData::IsColor [private]

Definition at line 60 of file opieexif.h.
Referenced by ExifData(), getIsColor(), and process_SOFn().

int Opie::MM::ExifData::ISOequivalent [private]

Definition at line 72 of file opieexif.h.
Referenced by ExifData(), getISOequivalent(), and ProcessExifDir().

unsigned char* Opie::MM::ExifData::LastExifRefd [private]

Definition at line 78 of file opieexif.h.
Referenced by process_EXIF(), and ProcessExifDir().

const int Opie::MM::ExifData::MAX_SECTIONS = 20 [static, private]

Definition at line 50 of file opieexif.h.
Referenced by ReadJpegSections().

int Opie::MM::ExifData::MeteringMode [private]

Definition at line 68 of file opieexif.h.
Referenced by ExifData(), getMeteringMode(), and ProcessExifDir().

int Opie::MM::ExifData::MotorolaOrder [private]

Definition at line 82 of file opieexif.h.
Referenced by ExifData(), Get16u(), Get32s(), and process_EXIF().

int Opie::MM::ExifData::Orientation [private]

Definition at line 57 of file opieexif.h.
Referenced by ExifData(), getOrientation(), getThumbnail(), and ProcessExifDir().

int Opie::MM::ExifData::Process [private]

Definition at line 61 of file opieexif.h.
Referenced by process_SOFn().

const unsigned int Opie::MM::ExifData::PSEUDO_IMAGE_MARKER = 0x123 [static, private]

Definition at line 51 of file opieexif.h.
Referenced by ReadJpegSections().

Section_t Opie::MM::ExifData::Sections[MAX_SECTIONS] [private]

Definition at line 52 of file opieexif.h.
Referenced by DiscardData(), and ReadJpegSections().

int Opie::MM::ExifData::SectionsRead [private]

Definition at line 83 of file opieexif.h.
Referenced by DiscardData(), and ReadJpegSections().

QImage Opie::MM::ExifData::Thumbnail [private]

Definition at line 76 of file opieexif.h.
Referenced by getThumbnail(), isThumbnailSane(), and ProcessExifDir().

QString Opie::MM::ExifData::UserComment [private]

Definition at line 74 of file opieexif.h.
Referenced by getUserComment(), ProcessExifDir(), and scan().

int Opie::MM::ExifData::Whitebalance [private]

Definition at line 67 of file opieexif.h.
Referenced by ExifData(), getWhitebalance(), and ProcessExifDir().

int Opie::MM::ExifData::Width [private]

Definition at line 58 of file opieexif.h.
Referenced by ExifData(), getWidth(), isThumbnailSane(), and process_SOFn().

The documentation for this class was generated from the following files:

libopie2/opiemm/opieexif.h
libopie2/opiemm/opieexif.cpp

Generated on Sat Nov 5 18:01:31 2005 for OPIE by

1.4.2

Opie::MM::ExifData Class Reference

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Classes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation